TechnoBuffalo has published an interesting infographic created by 100TB, a web hosting company, that reveals how much online gaming is worth in a number of different categories. By 2019 online gaming is estimated to be worth $118.6B globally.
Couple of other interesting statistics are:
League of Legends is the most played game in the world with 27 million active players every day and earning $1.3B in 2014
Global eSports will earn $1.1B in 2018
Tencent Games is by far the global gargantuan in terms of making money, earning a whopping $246.35B at market cap. The next closest competitor, Nintendo - $42B
Be sure to click the image below to see the full infographic.